Just got my no name FP gauge, liquid filled. On the top is a sticker that says to cut a little nib off on the back of the gauge after install. So I install it, feel pretty good that there are no leaks and it works. I cut off the black rubber nib on the back and a bunch of the liquid inside leads out. Was I not supposed to cut off that thing? Damn I hope its supposed to leak out a bit. Any input?